Length adjusting mechanism and rehabilitation training equipment comprising same

Abstract

The utility model provides a length adjusting mechanism and rehabilitation training equipment comprising the length adjusting mechanism, the length adjusting mechanism comprises a cover body, an adjusting rod which can be inserted into the cover body in a sliding manner, a plurality of first guide components and second guide components which are arranged in the cover body, and a positioning pin, two grooves are formed in the bottom of the adjusting rod in the length direction, and a plurality of positioning holes are formed between the two grooves; the positioning pins are inserted into the corresponding positioning holes according to the extension lengths; the multiple first guide assemblies are arranged at intervals in the length direction of the cover body, each first guide assembly comprises two guide columns which are symmetrically arranged, and each guide column is connected with the inner walls of the two sides of one groove; the multiple second guide assemblies are arranged in the length direction of the cover body at intervals and comprise two bearings which are symmetrically arranged, and each bearing is rotationally connected with the bottom plate of the corresponding groove. According to the embodiment, the adjusting rod can be prevented from sliding in the horizontal direction and the vertical direction during sliding through the first guide assembly and the second guide assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical rehabilitation, in particular to a length adjustment mechanism and rehabilitation training equipment comprising the length adjustment mechanism. Background Art

[0002] Most common medical equipment has a mechanism component that can manually adjust the length to accommodate rehabilitation personnel of different body shapes.

[0003] Such mechanical components often have uneven adjustments due to processing errors or material deformation. Excessive resistance and gaps can cause structural shaking, while small gaps can cause over-tight adjustments, making operation more difficult and affecting use.

[0004] Accordingly, a new type of mechanism assembly for adjusting the length is needed to solve the above problems. Utility Model Content

[0005] The content of this utility model is used to introduce the concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] The utility model provides a length adjustment mechanism and a rehabilitation training device comprising the length adjustment mechanism to solve the technical problems mentioned in the above background technology part.

[0007] In a first aspect, the utility model provides a length adjustment mechanism, comprising a cover body, an adjustment rod slidably inserted into the cover body, a plurality of first guide assemblies and second guide assemblies and a positioning pin arranged in the cover body, wherein:

[0008] The bottom of the adjusting rod is provided with two grooves along the length direction, and a plurality of positioning holes are provided between the two grooves; the positioning pins are inserted into the corresponding positioning holes according to the extended length;

[0009] A plurality of the first guide components are arranged at intervals along the length direction of the cover body, and include two symmetrically arranged guide posts, each guide post being engaged with two inner walls of a groove;

[0010] A plurality of the second guide assemblies are arranged at intervals along the length direction of the cover body, and include two symmetrically arranged bearings, each of which is rotatably engaged with a bottom plate of a groove.

[0011] Optionally, the plurality of first guide assemblies and the plurality of second guide assemblies are arranged at intervals.

[0012] Optionally, a sliding sheet is detachably mounted on the inner wall of the cover body, and the sliding sheet is slidably engaged with the upper surface of the adjusting rod.

[0013] Optionally, the second guide assembly further comprises a pressing seat, and two ends of the pressing seat are pivotally connected to two bearings, and the axial direction of the bearings is parallel to the width direction of the cover body.

[0014] Optionally, the second guide assembly further comprises bearing shafts fixed to both ends of the clamping seat, and the inner rings of the two bearings are rotatably sleeved on the two bearing shafts in a one-to-one correspondence.

[0015] Optionally, the bearing shaft is connected with a fastening bolt, and a clamping gasket is sleeved on the fastening bolt. In an assembled state, the clamping gasket, the inner ring of the bearing, the clamping seat and the bearing shaft are tightly engaged.

[0016] Optionally, the pressing seat is connected to the bottom of the cover body via a plurality of set screws, and the set screws are used to adjust the degree of engagement between the bearing and the groove.

[0017] Optionally, the locating pin is one of the following: an indexing pin, a rotary plunger, a spring plunger.

[0018] Optionally, a scale is provided on the upper surface of the adjusting rod.

[0019] In a second aspect, the utility model provides a rehabilitation training device, comprising a length adjustment mechanism as described in any embodiment of the first aspect.

[0020] The above-mentioned embodiments of the utility model have the following beneficial effects: through the length adjustment mechanism of some embodiments of the utility model, the problem of shaking of the adjustment rod and non-smooth adjustment during extension and retraction can be reduced.

[0021] Specifically, by providing the first guide assembly, both guide posts are engaged with the inner wall of the groove, so that the adjustment rod is always restricted by the guide posts during the sliding process, thereby preventing the adjustment rod from shaking in the horizontal direction.

[0022] By providing a second guide assembly, two bearings are rotatably engaged with the bottom of the groove, so that the bearings rotate together with the adjusting rod during the sliding process, which can reduce the friction between the adjusting rod and the adjusting rod, making the adjusting rod smoother when extending and retracting. In addition, the bearings also play a role in supporting the groove, which can prevent the adjusting rod from shaking in the vertical direction.

[0023] In this way, the friction of the adjusting rod is smaller and smoother when sliding, and the sliding direction of the adjusting rod can be limited, thereby improving the stability and reliability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a three-dimensional diagram of an embodiment of the length adjustment mechanism of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of another embodiment of the length adjustment mechanism of the utility model;

[0027] Figure 3 It is a top view of the length adjustment mechanism of the utility model;

[0028] Figure 4 for Figure 3 Sectional view along AA direction;

[0029] Figure 5 for Figure 3 Cross-sectional view along direction BB.

[0030] Description of reference numerals:

[0031] 1: cover body; 11: sliding sheet; 2: adjusting rod; 21: groove; 22: positioning hole; 23: scale; 31: guide column; 41: bearing; 42: clamping seat; 43: bearing shaft; 44: clamping gasket; 45: set screw; 5: positioning pin. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] See also Figures 1 to 5 , Figure 1 It is a three-dimensional diagram of an embodiment of the length adjustment mechanism of the utility model; Figure 2 It is a three-dimensional diagram of another embodiment of the length adjustment mechanism of the utility model; Figure 3 It is a top view of the length adjustment mechanism of the utility model; Figure 4 for Figure 3 Sectional view along AA direction;

[0037] Figure 5 for Figure 3 The cross-sectional view along the BB direction. Figure 1 As shown, the length adjustment mechanism includes a cover body 1, an adjustment rod 2 and a positioning pin 5. The adjustment rod 2 is slidably arranged in the cover body 1. In order to facilitate the installation of the adjustment rod 2, the cover body 1 can be composed of an upper and a lower part connected by bolts. Figure 1 A scale 23 may be provided on the cover 1 to intuitively determine the extension length of the adjusting rod 2 relative to the cover 1.

[0038] like Figure 2 and Figure 3 As shown, the bottom of the adjusting rod 2 is provided with two grooves 21 opened along the length direction of the adjusting rod 2, and a plurality of positioning holes 22 are provided between the two grooves 21. A positioning pin 5 is provided at the bottom of the cover body 1. When locking the extended length of the adjusting rod 2, the positioning pin 5 can pass through the bottom of the cover body 1 and the corresponding positioning hole 22, thereby fixing the above-mentioned adjusting rod 2. As an example, the above-mentioned positioning pin 5 can include but is not limited to one of the following: an indexing pin, a rotary plunger, and a spring plunger.

[0039] like Figure 4 As shown, the length adjustment mechanism also includes a plurality of first guide assemblies. The plurality of first guide assemblies are arranged at intervals along the length direction of the cover body 1. Those skilled in the art can adjust the number of the first guide assemblies according to actual conditions. Each first guide assembly includes two symmetrically arranged guide columns 31. The two guide columns 31 can be set to the inner wall of the bottom of the cover body 1. In the assembled state, each guide column 31 is engaged with the inner walls on both sides of a groove 21, so that the adjustment rod 2 is always restricted by the plurality of guide columns 31 during the sliding process, which can prevent the adjustment rod 2 from shaking in the horizontal direction.

[0040] like Figure 5 As shown, the length adjustment mechanism also includes a plurality of second guide assemblies. The plurality of second guide assemblies are arranged at intervals along the length direction of the cover body 1, and can be arranged alternately with the first guide assemblies. Those skilled in the art can adjust the number of the second guide assemblies according to actual conditions. Each second guide assembly includes two symmetrically arranged bearings 41. In the assembled state, the outer ring of each bearing 41 is rotatably engaged with the bottom plate of a groove 21. As an example, a shaft can be fixed on the left and right inner walls of the cover body 1, and the two bearings 41 are sleeved on the shaft, and the position of the bearings 41 can be fixed by a locking ring.

[0041] Optionally, the second guide assembly may further include two bearing shafts 43 and a pressing seat 42. The two bearing shafts 43 are symmetrically arranged at both ends of the pressing seat 42. Figure 5 Taking the bearing shaft 43 inserted in the direction of the pressing seat 42 as an example, the bearing shaft 43 passes through the left end of the pressing seat 42 from right to left, and a shaft cap can be provided on the right side of the bearing shaft 43 to limit the insertion distance of the bearing shaft 43. The inner ring of the bearing 41 is sleeved on the section of the bearing shaft 43 located on the left side of the pressing seat 42. The outer ring of the bearing 41 is rotatably engaged with the bottom plate of the left groove 21.

[0042] In order to ensure that the bearing shaft 43 is firmly connected to the pressing seat 42, a fastening bolt is connected to the left side of the bearing shaft 43, and the axis of the fastening bolt coincides with the axis of the bearing shaft 43. A pressing gasket 44 is also sleeved between the fastening bolt and the bearing 41. In the assembled state, after the fastening bolt is locked with the bearing shaft 43, under the pressure of the fastening bolt, the pressing gasket 44 can be tightly engaged with the left side of the inner ring of the bearing 41, and the right side of the inner ring of the bearing 41 is tightly engaged with the left end of the pressing seat 42, and the right end of the pressing seat 42 can also be engaged with the shaft cap at the right end of the bearing shaft 43. In this way, the bearing shaft 43, the bearing 41 and the pressing seat 42 are firmly connected, thereby preventing the bearing 41 from sliding along the bearing shaft 43.

[0043] Furthermore, a plurality of set screws 45 are provided at the bottom of the cover body 1, and each set screw 45 passes through the cover body and is connected to the bottom of the clamping seat 42. By adjusting the clamping seat 42 through the set screws 45, the outer ring of the bearing 41 can be tightly engaged with the bottom plate of the groove 21, thereby avoiding a gap between the two and causing the adjusting rod 2 to shake.

[0044] In the working state, the two bearings 41 are rotatably engaged with the bottom of the groove 21, so that the bearings 41 rotate together with the adjusting rod 2 during the sliding process, which can reduce the friction between the adjusting rod 2 and the adjusting rod 2, making the adjusting rod 2 smoother when extending and retracting. In addition, the bearings 41 also play a role in supporting the groove 21, which can prevent the adjusting rod 2 from shaking in the vertical direction.

[0045] Re-read Figure 4 and Figure 5 Two sliding sheets 11 can be connected to the inner wall of the upper end of the cover body 1, and the bottoms of the two sliding sheets 11 are slidably connected to the upper surface of the adjustment rod 2. The sliding sheets 11 can prevent the adjustment rod 2 from being worn out by friction with the cover body 1. The sliding sheets 11 can be used as wearing parts, and can be replaced regularly to protect the cover body 1 and the adjustment rod 2.

[0046] The sliding sheet 11 can be made of a smooth and wear-resistant material, such as polytetrafluoroethylene, polycarbonate, and acrylic resin. Those skilled in the art can select according to actual conditions. In addition, the number of the sliding sheets 11 can also be one or more, and those skilled in the art can adjust according to actual conditions.

[0047] The length adjustment mechanism of the utility model can reduce the wear between the cover body 1 and the adjustment rod 2 by regularly replacing the sliding sheet 11, thereby increasing the service life of the cover body 1 and the adjustment rod 2.

[0048] In addition, by tightening the bolts to lock the bearing shaft 43, the pressing gasket 44, the inner ring of the bearing 41, the pressing seat 42 and the bearing shaft 43 can be tightly connected, which not only fixes the setting direction of the bearing shaft 43, but also prevents the bearing 41 from sliding along the bearing shaft 43. In this way, the outer ring of the bearing 41 will not tilt or slide, and the degree of engagement with the bottom plate of the groove 21 is improved, thereby improving the sliding stability of the adjustment rod 2.

[0049] Furthermore, by setting a set screw 45, the height of the clamping seat 42 can be adjusted, so that the outer ring of the bearing 41 is always tightly engaged with the bottom plate of the groove 21, avoiding the generation of gaps and causing shaking when the adjusting rod 2 slides, thereby improving the stability of the length adjustment mechanism.

[0050] The utility model also provides a rehabilitation training device, comprising the length adjustment mechanism described in the above embodiments.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A length adjustment mechanism, characterized in that: The invention comprises a cover body, an adjusting rod slidably inserted into the cover body, a plurality of first guide components and second guide components and a positioning pin arranged in the cover body, wherein: The bottom of the adjusting rod is provided with two grooves along the length direction, and a plurality of positioning holes are provided between the two grooves; the positioning pins are inserted into the corresponding positioning holes according to the extended length; A plurality of the first guide components are arranged at intervals along the length direction of the cover body, and include two symmetrically arranged guide posts, each guide post being engaged with two inner walls of a groove; A plurality of the second guide assemblies are arranged at intervals along the length direction of the cover body, and include two symmetrically arranged bearings, each of which is rotatably engaged with a bottom plate of a groove.

2. The length adjustment mechanism according to claim 1, characterized in that: The plurality of first guide assemblies and the plurality of second guide assemblies are arranged at intervals.

3. The length adjustment mechanism according to claim 1, characterized in that: A sliding sheet is detachably mounted on the inner wall of the cover body, and the sliding sheet is slidably engaged with the upper surface of the adjusting rod.

4. The length adjustment mechanism according to claim 1, characterized in that: The second guide assembly further comprises a pressing seat, and two ends of the pressing seat are pivotally connected to two bearings, and the axial direction of the bearings is parallel to the width direction of the cover body.

5. The length adjustment mechanism according to claim 4, characterized in that: The second guide assembly also includes bearing shafts fixed to both ends of the clamping seat, and the inner rings of the two bearings are rotatably sleeved on the two bearing shafts in a one-to-one correspondence.

6. The length adjustment mechanism according to claim 5, characterized in that: The bearing shaft is connected with a fastening bolt, and a clamping gasket is sleeved on the fastening bolt. In an assembled state, the clamping gasket, the inner ring of the bearing, the clamping seat and the bearing shaft are tightly engaged.

7. The length adjustment mechanism according to claim 4, characterized in that: The pressing seat is connected to the bottom of the cover body through a plurality of set screws, and the set screws are used to adjust the engagement degree between the bearing and the groove.

8. The length adjustment mechanism according to claim 1, characterized in that: The locating pin is one of the following: Indexing plungers, rotary plungers, spring plungers.

9. The length adjustment mechanism according to claim 1, characterized in that: The upper surface of the adjusting rod is provided with scales.

10. A rehabilitation training device, characterized in that: Comprising a length adjustment mechanism as described in any one of claims 1-9.

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